Where does “cysteineless” come from?

cysteineless (English) comes from English cysteine, from English cystine, from Ancient Greek κύστις, from Proto-Indo-European (s)kewH- — to cover, bedeck; cover.

cysteineless (English): That lacks cysteine amino-acids

Definitions

  1. That lacks cysteine amino-acids

Ancestry of “cysteineless”, step by step

cysteineless traces back through two separate lines of ancestry.

via English cysteine

StepLanguageWordMeaning
1EnglishcysteineA sulphur-containing nonessential amino acid...
2EnglishcystineA nonessential amino acid formed by the oxidation...
3Ancient Greekκύστιςbladder
4Proto-Indo-European(s)kewH-to cover, bedeck; cover

via English less

StepLanguageWordMeaning
1EnglishlessTo a smaller extent or degree; comparative form...
2Middle Englishlesfalse; lying; deceptive; falsehood; a lie
3Old Englishlēasfalse, lax; false, void, loose; devoid of, loose...
4Proto-Germanic*laus—
Every word from Proto-Indo-European (s)kewH- →Every word from Ancient Greek κύστις →Every word from English cystine →